Chemical Magic in Colored Spray Paint ‌

Last week, I saw a row of colorful spray paint cans in a hardware store, and I suddenly wondered what secrets these magical liquids that "spray into shape" hide. The boss, Zhang, said to me while sorting out the goods: "Don't be fooled by its appearance of a beverage, the formula inside is more complicated than your kitchen seasoning!"

First, let's talk about its "skeleton" - resin. Zhang picked up a red spray paint and shook it: "This thing is mainly supported by acrylic resin, just like the steel and cement of a house. Some high-end products will also add polyurethane resin, which is particularly wear-resistant when sprayed." He specifically emphasized that environmentally friendly spray paints now use water-based resins, which have less pungent smells.

The pigment part is even more particular. I found that there are always some shiny particles in metallic spray paints. Zhang said that it was aluminum powder or pearlescent powder: "Ordinary pigments can't support that kind of reflective effect, just like the highlight powder when applying makeup, a little less will not show the feeling." However, he also reminded me that some inferior spray paints use heavy metal pigments, which smell particularly pungent.

The most amazing thing is those "invisible assistants". Once I saw a master repairing a car door, and he always sprayed a layer of transparent primer before spraying. Lao Zhang explained that this is called "adhesion promoter", just like double-sided tape to make paint stick firmly to metal. There is also something called "leveling agent", which can make the paint surface as smooth as a mirror, without the texture of orange peel.

However, colored spray paint is not perfect. Last time I helped a friend spray a model, the paint mist drifted into his eyes, and it hurt so much that he cried. Lao Zhang quickly took out the eyewash: "These quick-drying ingredients will irritate the eyes, so you must wear goggles." He also specially reminded that ordinary spray paint cans should never be punctured after use, because the residual compressed gas inside will suddenly spray out.

Next time you see those colorful spray paint cans, don't underestimate them - there is a set of precise chemical formulas behind each color!

As a professional manufacturer and supplier, we provide high-quality products. If you are interested in our products or have any questions, please feel free to contact us.